CVE-2021-1517

Cisco Webex Meetings and Webex Meetings Server Multimedia Sharing Security Bypass Vulnerability

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in the multimedia viewer feature of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an authenticated, remote attacker to bypass security protections. This vulnerability is due to unsafe handling of shared content within the multimedia viewer feature. An attacker could exploit this vulnerability by sharing a file through the multimedia viewer feature. A successful exploit could allow the attacker to bypass security protections and prevent warning dialogs from appearing before files are offered to other users.

Una vulnerabilidad en la funcionalidad multimedia viewer de Cisco Webex Meetings y Cisco Webex Meetings Server, podría permitir a un atacante remoto autenticado omitir las protecciones de seguridad. Esta vulnerabilidad es debido al manejo no seguro del contenido compartido dentro de la funcionalidad multimedia viewer. Un atacante podría explotar esta vulnerabilidad compartiendo un archivo mediante la funcionalidad multimedia viewer. Una explotación con éxito podría permitir al atacante omitir las protecciones de seguridad e impedir que aparezcan diálogos de advertencia antes de que los archivos sean ofrecidos a otros usuarios

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2020-11-13 CVE Reserved
2021-06-04 CVE Published
2023-03-08 EPSS Updated
2024-11-07 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-693: Protection Mechanism Failure

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-multimedia-26DpqVRO	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Webex Meetings Online Search vendor "Cisco" for product "Webex Meetings Online"				41.3.5 Search vendor "Cisco" for product "Webex Meetings Online" and version "41.3.5"		-		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				< 3.0 Search vendor "Cisco" for product "Webex Meetings Server" and version " < 3.0"		-		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				3.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "3.0"		-		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				3.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "3.0"		maintenance_release1		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				3.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "3.0"		maintenance_release2		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				3.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "3.0"		maintenance_release3		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				4.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "4.0"		-		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				4.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "4.0"		maintenance_release1		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				4.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "4.0"		maintenance_release2		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				4.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "4.0"		maintenance_release3		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				4.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "4.0"		maintenance_release3_security_patch3		Affected
Cisco Search vendor "Cisco"		Webex Meetings Server Search vendor "Cisco" for product "Webex Meetings Server"				4.0 Search vendor "Cisco" for product "Webex Meetings Server" and version "4.0"		maintenance_release3_security_patch4		Affected